In 1934, Eaton and Musgrove monitored the Adventure Society, a group that was collecting powerful artifacts across the globe.

Musgrove and Eaton at Hangar 51.

Believing the members could be useful to them, Eaton and Musgrove arranged to have the artifacts stolen and left a trail for the protegé of Society member ProfessorJohn Allen to follow which led back to a warehouse in Nevada. When the Society member arrived, Eaton and his partner revealed their ruse and their true intentions: they wanted Allen's team to join them as "top men."[2]

After Jones survived the opening of the Ark on a secret Nazi island in the Mediterranean, Eaton and Musgrove reunited with Jones and Brody back in Washington DC. While Jones and Brody argued that the Ark needed to be studied, Eaton told them that their assistance was no longer needed, and instead "top men" would be handling the further research into the Ark's powers. In fact, the Ark was secreted away for storage at the army intelligence warehouse installation in Nevada as crate #9906753.[3]

At the end of LEGO Indiana Jones: The Original Adventures'Raiders of the Lost Ark stage, Eaton supervises the storing of the Ark in the gargantuan warehouse, only to become comically lost when he can't find his way through the maze-like stacks of boxes.